Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Prestressed concrete [5] Slab [01]
Deck: Closed Grating [4] with Wearing Surface: Latex Concrete or similar additive [3]
Bridge Dimensions
Length: 128.9 m = 422.9 ft
Main Spans: 1 at 103 m = 337.9 ft
Approach Spans: 2
Skew: 0
Width, Roadway: 4 m = 13.1 ft (1 Lanes) and Out-To-Out: 4.9 m = 16.1 ft for a 4 m = 13.1 ft approaching roadway.
Vertical Clearance: 5.49 m = 18.0 ft and Navigational Clearance: 0 = N/A
Location
Whatcom [99073]: Whatcom County [073], Washington [53]
Owned by County Highway Agency [02], DOT District: 1
05.2 SE MT.BAKER HY
Condition
Deck: Very Good [8]
Superstructure: Satisfactory [6]
Substructure: Good [7]
Loading
Design: M 18 / H 20 [4]
Operating: 33.6 metric ton = 37.0 tons (Load and Resistance Factor(LRFR) [3])
Inventory: 26.3 metric ton = 28.9 tons (Load and Resistance Factor(LRFR) [3])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Basically intolerable requiring high priority of corrrective action [3]
Waterway: Equal to present desirable criteria [8] and Countermeasures have been installed to mitigate an existing problem with scour. [7]
Inspections
Date: August 2020 [0820] and Frequency: 24
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 3.4 km = 2.1 mi
Traffic
ADT: 117 (2018) and Trucks: 4%
Future ADT: 250 (In 2040
)
